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author | Srikant Patnaik | 2015-01-11 12:28:04 +0530 |
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committer | Srikant Patnaik | 2015-01-11 12:28:04 +0530 |
commit | 871480933a1c28f8a9fed4c4d34d06c439a7a422 (patch) | |
tree | 8718f573808810c2a1e8cb8fb6ac469093ca2784 /ANDROID_3.4.5/fs/dlm/dlm_internal.h | |
parent | 9d40ac5867b9aefe0722bc1f110b965ff294d30d (diff) | |
download | FOSSEE-netbook-kernel-source-871480933a1c28f8a9fed4c4d34d06c439a7a422.tar.gz FOSSEE-netbook-kernel-source-871480933a1c28f8a9fed4c4d34d06c439a7a422.tar.bz2 FOSSEE-netbook-kernel-source-871480933a1c28f8a9fed4c4d34d06c439a7a422.zip |
Moved, renamed, and deleted files
The original directory structure was scattered and unorganized.
Changes are basically to make it look like kernel structure.
Diffstat (limited to 'ANDROID_3.4.5/fs/dlm/dlm_internal.h')
-rw-r--r-- | ANDROID_3.4.5/fs/dlm/dlm_internal.h | 661 |
1 files changed, 0 insertions, 661 deletions
diff --git a/ANDROID_3.4.5/fs/dlm/dlm_internal.h b/ANDROID_3.4.5/fs/dlm/dlm_internal.h deleted file mode 100644 index 3a564d19..00000000 --- a/ANDROID_3.4.5/fs/dlm/dlm_internal.h +++ /dev/null @@ -1,661 +0,0 @@ -/****************************************************************************** -******************************************************************************* -** -** Copyright (C) Sistina Software, Inc. 1997-2003 All rights reserved. -** Copyright (C) 2004-2011 Red Hat, Inc. All rights reserved. -** -** This copyrighted material is made available to anyone wishing to use, -** modify, copy, or redistribute it subject to the terms and conditions -** of the GNU General Public License v.2. -** -******************************************************************************* -******************************************************************************/ - -#ifndef __DLM_INTERNAL_DOT_H__ -#define __DLM_INTERNAL_DOT_H__ - -/* - * This is the main header file to be included in each DLM source file. - */ - -#include <linux/module.h> -#include <linux/slab.h> -#include <linux/sched.h> -#include <linux/types.h> -#include <linux/ctype.h> -#include <linux/spinlock.h> -#include <linux/vmalloc.h> -#include <linux/list.h> -#include <linux/errno.h> -#include <linux/random.h> -#include <linux/delay.h> -#include <linux/socket.h> -#include <linux/kthread.h> -#include <linux/kobject.h> -#include <linux/kref.h> -#include <linux/kernel.h> -#include <linux/jhash.h> -#include <linux/miscdevice.h> -#include <linux/mutex.h> -#include <linux/idr.h> -#include <asm/uaccess.h> - -#include <linux/dlm.h> -#include "config.h" - -/* Size of the temp buffer midcomms allocates on the stack. - We try to make this large enough so most messages fit. - FIXME: should sctp make this unnecessary? */ - -#define DLM_INBUF_LEN 148 - -struct dlm_ls; -struct dlm_lkb; -struct dlm_rsb; -struct dlm_member; -struct dlm_rsbtable; -struct dlm_dirtable; -struct dlm_direntry; -struct dlm_recover; -struct dlm_header; -struct dlm_message; -struct dlm_rcom; -struct dlm_mhandle; - -#define log_print(fmt, args...) \ - printk(KERN_ERR "dlm: "fmt"\n" , ##args) -#define log_error(ls, fmt, args...) \ - printk(KERN_ERR "dlm: %s: " fmt "\n", (ls)->ls_name , ##args) - -#define log_debug(ls, fmt, args...) \ -do { \ - if (dlm_config.ci_log_debug) \ - printk(KERN_DEBUG "dlm: %s: " fmt "\n", \ - (ls)->ls_name , ##args); \ -} while (0) - -#define DLM_ASSERT(x, do) \ -{ \ - if (!(x)) \ - { \ - printk(KERN_ERR "\nDLM: Assertion failed on line %d of file %s\n" \ - "DLM: assertion: \"%s\"\n" \ - "DLM: time = %lu\n", \ - __LINE__, __FILE__, #x, jiffies); \ - {do} \ - printk("\n"); \ - BUG(); \ - panic("DLM: Record message above and reboot.\n"); \ - } \ -} - - -struct dlm_direntry { - struct list_head list; - uint32_t master_nodeid; - uint16_t length; - char name[1]; -}; - -struct dlm_dirtable { - struct list_head list; - spinlock_t lock; -}; - -struct dlm_rsbtable { - struct rb_root keep; - struct rb_root toss; - spinlock_t lock; -}; - - -/* - * Lockspace member (per node in a ls) - */ - -struct dlm_member { - struct list_head list; - int nodeid; - int weight; - int slot; - int slot_prev; - int comm_seq; - uint32_t generation; -}; - -/* - * Save and manage recovery state for a lockspace. - */ - -struct dlm_recover { - struct list_head list; - struct dlm_config_node *nodes; - int nodes_count; - uint64_t seq; -}; - -/* - * Pass input args to second stage locking function. - */ - -struct dlm_args { - uint32_t flags; - void (*astfn) (void *astparam); - void *astparam; - void (*bastfn) (void *astparam, int mode); - int mode; - struct dlm_lksb *lksb; - unsigned long timeout; -}; - - -/* - * Lock block - * - * A lock can be one of three types: - * - * local copy lock is mastered locally - * (lkb_nodeid is zero and DLM_LKF_MSTCPY is not set) - * process copy lock is mastered on a remote node - * (lkb_nodeid is non-zero and DLM_LKF_MSTCPY is not set) - * master copy master node's copy of a lock owned by remote node - * (lkb_nodeid is non-zero and DLM_LKF_MSTCPY is set) - * - * lkb_exflags: a copy of the most recent flags arg provided to dlm_lock or - * dlm_unlock. The dlm does not modify these or use any private flags in - * this field; it only contains DLM_LKF_ flags from dlm.h. These flags - * are sent as-is to the remote master when the lock is remote. - * - * lkb_flags: internal dlm flags (DLM_IFL_ prefix) from dlm_internal.h. - * Some internal flags are shared between the master and process nodes; - * these shared flags are kept in the lower two bytes. One of these - * flags set on the master copy will be propagated to the process copy - * and v.v. Other internal flags are private to the master or process - * node (e.g. DLM_IFL_MSTCPY). These are kept in the high two bytes. - * - * lkb_sbflags: status block flags. These flags are copied directly into - * the caller's lksb.sb_flags prior to the dlm_lock/dlm_unlock completion - * ast. All defined in dlm.h with DLM_SBF_ prefix. - * - * lkb_status: the lock status indicates which rsb queue the lock is - * on, grant, convert, or wait. DLM_LKSTS_ WAITING/GRANTED/CONVERT - * - * lkb_wait_type: the dlm message type (DLM_MSG_ prefix) for which a - * reply is needed. Only set when the lkb is on the lockspace waiters - * list awaiting a reply from a remote node. - * - * lkb_nodeid: when the lkb is a local copy, nodeid is 0; when the lkb - * is a master copy, nodeid specifies the remote lock holder, when the - * lkb is a process copy, the nodeid specifies the lock master. - */ - -/* lkb_status */ - -#define DLM_LKSTS_WAITING 1 -#define DLM_LKSTS_GRANTED 2 -#define DLM_LKSTS_CONVERT 3 - -/* lkb_flags */ - -#define DLM_IFL_MSTCPY 0x00010000 -#define DLM_IFL_RESEND 0x00020000 -#define DLM_IFL_DEAD 0x00040000 -#define DLM_IFL_OVERLAP_UNLOCK 0x00080000 -#define DLM_IFL_OVERLAP_CANCEL 0x00100000 -#define DLM_IFL_ENDOFLIFE 0x00200000 -#define DLM_IFL_WATCH_TIMEWARN 0x00400000 -#define DLM_IFL_TIMEOUT_CANCEL 0x00800000 -#define DLM_IFL_DEADLOCK_CANCEL 0x01000000 -#define DLM_IFL_STUB_MS 0x02000000 /* magic number for m_flags */ -#define DLM_IFL_USER 0x00000001 -#define DLM_IFL_ORPHAN 0x00000002 - -#define DLM_CALLBACKS_SIZE 6 - -#define DLM_CB_CAST 0x00000001 -#define DLM_CB_BAST 0x00000002 -#define DLM_CB_SKIP 0x00000004 - -struct dlm_callback { - uint64_t seq; - uint32_t flags; /* DLM_CBF_ */ - int sb_status; /* copy to lksb status */ - uint8_t sb_flags; /* copy to lksb flags */ - int8_t mode; /* rq mode of bast, gr mode of cast */ -}; - -struct dlm_lkb { - struct dlm_rsb *lkb_resource; /* the rsb */ - struct kref lkb_ref; - int lkb_nodeid; /* copied from rsb */ - int lkb_ownpid; /* pid of lock owner */ - uint32_t lkb_id; /* our lock ID */ - uint32_t lkb_remid; /* lock ID on remote partner */ - uint32_t lkb_exflags; /* external flags from caller */ - uint32_t lkb_sbflags; /* lksb flags */ - uint32_t lkb_flags; /* internal flags */ - uint32_t lkb_lvbseq; /* lvb sequence number */ - - int8_t lkb_status; /* granted, waiting, convert */ - int8_t lkb_rqmode; /* requested lock mode */ - int8_t lkb_grmode; /* granted lock mode */ - int8_t lkb_highbast; /* highest mode bast sent for */ - - int8_t lkb_wait_type; /* type of reply waiting for */ - int8_t lkb_wait_count; - int lkb_wait_nodeid; /* for debugging */ - - struct list_head lkb_statequeue; /* rsb g/c/w list */ - struct list_head lkb_rsb_lookup; /* waiting for rsb lookup */ - struct list_head lkb_wait_reply; /* waiting for remote reply */ - struct list_head lkb_ownqueue; /* list of locks for a process */ - struct list_head lkb_time_list; - ktime_t lkb_timestamp; - ktime_t lkb_wait_time; - unsigned long lkb_timeout_cs; - - struct mutex lkb_cb_mutex; - struct work_struct lkb_cb_work; - struct list_head lkb_cb_list; /* for ls_cb_delay or proc->asts */ - struct dlm_callback lkb_callbacks[DLM_CALLBACKS_SIZE]; - struct dlm_callback lkb_last_cast; - struct dlm_callback lkb_last_bast; - ktime_t lkb_last_cast_time; /* for debugging */ - ktime_t lkb_last_bast_time; /* for debugging */ - - char *lkb_lvbptr; - struct dlm_lksb *lkb_lksb; /* caller's status block */ - void (*lkb_astfn) (void *astparam); - void (*lkb_bastfn) (void *astparam, int mode); - union { - void *lkb_astparam; /* caller's ast arg */ - struct dlm_user_args *lkb_ua; - }; -}; - - -struct dlm_rsb { - struct dlm_ls *res_ls; /* the lockspace */ - struct kref res_ref; - struct mutex res_mutex; - unsigned long res_flags; - int res_length; /* length of rsb name */ - int res_nodeid; - uint32_t res_lvbseq; - uint32_t res_hash; - uint32_t res_bucket; /* rsbtbl */ - unsigned long res_toss_time; - uint32_t res_first_lkid; - struct list_head res_lookup; /* lkbs waiting on first */ - union { - struct list_head res_hashchain; - struct rb_node res_hashnode; /* rsbtbl */ - }; - struct list_head res_grantqueue; - struct list_head res_convertqueue; - struct list_head res_waitqueue; - - struct list_head res_root_list; /* used for recovery */ - struct list_head res_recover_list; /* used for recovery */ - int res_recover_locks_count; - - char *res_lvbptr; - char res_name[DLM_RESNAME_MAXLEN+1]; -}; - -/* find_rsb() flags */ - -#define R_MASTER 1 /* only return rsb if it's a master */ -#define R_CREATE 2 /* create/add rsb if not found */ - -/* rsb_flags */ - -enum rsb_flags { - RSB_MASTER_UNCERTAIN, - RSB_VALNOTVALID, - RSB_VALNOTVALID_PREV, - RSB_NEW_MASTER, - RSB_NEW_MASTER2, - RSB_RECOVER_CONVERT, - RSB_LOCKS_PURGED, -}; - -static inline void rsb_set_flag(struct dlm_rsb *r, enum rsb_flags flag) -{ - __set_bit(flag, &r->res_flags); -} - -static inline void rsb_clear_flag(struct dlm_rsb *r, enum rsb_flags flag) -{ - __clear_bit(flag, &r->res_flags); -} - -static inline int rsb_flag(struct dlm_rsb *r, enum rsb_flags flag) -{ - return test_bit(flag, &r->res_flags); -} - - -/* dlm_header is first element of all structs sent between nodes */ - -#define DLM_HEADER_MAJOR 0x00030000 -#define DLM_HEADER_MINOR 0x00000001 - -#define DLM_HEADER_SLOTS 0x00000001 - -#define DLM_MSG 1 -#define DLM_RCOM 2 - -struct dlm_header { - uint32_t h_version; - uint32_t h_lockspace; - uint32_t h_nodeid; /* nodeid of sender */ - uint16_t h_length; - uint8_t h_cmd; /* DLM_MSG, DLM_RCOM */ - uint8_t h_pad; -}; - - -#define DLM_MSG_REQUEST 1 -#define DLM_MSG_CONVERT 2 -#define DLM_MSG_UNLOCK 3 -#define DLM_MSG_CANCEL 4 -#define DLM_MSG_REQUEST_REPLY 5 -#define DLM_MSG_CONVERT_REPLY 6 -#define DLM_MSG_UNLOCK_REPLY 7 -#define DLM_MSG_CANCEL_REPLY 8 -#define DLM_MSG_GRANT 9 -#define DLM_MSG_BAST 10 -#define DLM_MSG_LOOKUP 11 -#define DLM_MSG_REMOVE 12 -#define DLM_MSG_LOOKUP_REPLY 13 -#define DLM_MSG_PURGE 14 - -struct dlm_message { - struct dlm_header m_header; - uint32_t m_type; /* DLM_MSG_ */ - uint32_t m_nodeid; - uint32_t m_pid; - uint32_t m_lkid; /* lkid on sender */ - uint32_t m_remid; /* lkid on receiver */ - uint32_t m_parent_lkid; - uint32_t m_parent_remid; - uint32_t m_exflags; - uint32_t m_sbflags; - uint32_t m_flags; - uint32_t m_lvbseq; - uint32_t m_hash; - int m_status; - int m_grmode; - int m_rqmode; - int m_bastmode; - int m_asts; - int m_result; /* 0 or -EXXX */ - char m_extra[0]; /* name or lvb */ -}; - - -#define DLM_RS_NODES 0x00000001 -#define DLM_RS_NODES_ALL 0x00000002 -#define DLM_RS_DIR 0x00000004 -#define DLM_RS_DIR_ALL 0x00000008 -#define DLM_RS_LOCKS 0x00000010 -#define DLM_RS_LOCKS_ALL 0x00000020 -#define DLM_RS_DONE 0x00000040 -#define DLM_RS_DONE_ALL 0x00000080 - -#define DLM_RCOM_STATUS 1 -#define DLM_RCOM_NAMES 2 -#define DLM_RCOM_LOOKUP 3 -#define DLM_RCOM_LOCK 4 -#define DLM_RCOM_STATUS_REPLY 5 -#define DLM_RCOM_NAMES_REPLY 6 -#define DLM_RCOM_LOOKUP_REPLY 7 -#define DLM_RCOM_LOCK_REPLY 8 - -struct dlm_rcom { - struct dlm_header rc_header; - uint32_t rc_type; /* DLM_RCOM_ */ - int rc_result; /* multi-purpose */ - uint64_t rc_id; /* match reply with request */ - uint64_t rc_seq; /* sender's ls_recover_seq */ - uint64_t rc_seq_reply; /* remote ls_recover_seq */ - char rc_buf[0]; -}; - -union dlm_packet { - struct dlm_header header; /* common to other two */ - struct dlm_message message; - struct dlm_rcom rcom; -}; - -#define DLM_RSF_NEED_SLOTS 0x00000001 - -/* RCOM_STATUS data */ -struct rcom_status { - __le32 rs_flags; - __le32 rs_unused1; - __le64 rs_unused2; -}; - -/* RCOM_STATUS_REPLY data */ -struct rcom_config { - __le32 rf_lvblen; - __le32 rf_lsflags; - - /* DLM_HEADER_SLOTS adds: */ - __le32 rf_flags; - __le16 rf_our_slot; - __le16 rf_num_slots; - __le32 rf_generation; - __le32 rf_unused1; - __le64 rf_unused2; -}; - -struct rcom_slot { - __le32 ro_nodeid; - __le16 ro_slot; - __le16 ro_unused1; - __le64 ro_unused2; -}; - -struct rcom_lock { - __le32 rl_ownpid; - __le32 rl_lkid; - __le32 rl_remid; - __le32 rl_parent_lkid; - __le32 rl_parent_remid; - __le32 rl_exflags; - __le32 rl_flags; - __le32 rl_lvbseq; - __le32 rl_result; - int8_t rl_rqmode; - int8_t rl_grmode; - int8_t rl_status; - int8_t rl_asts; - __le16 rl_wait_type; - __le16 rl_namelen; - char rl_name[DLM_RESNAME_MAXLEN]; - char rl_lvb[0]; -}; - -struct dlm_ls { - struct list_head ls_list; /* list of lockspaces */ - dlm_lockspace_t *ls_local_handle; - uint32_t ls_global_id; /* global unique lockspace ID */ - uint32_t ls_generation; - uint32_t ls_exflags; - int ls_lvblen; - int ls_count; /* refcount of processes in - the dlm using this ls */ - int ls_create_count; /* create/release refcount */ - unsigned long ls_flags; /* LSFL_ */ - unsigned long ls_scan_time; - struct kobject ls_kobj; - - struct idr ls_lkbidr; - spinlock_t ls_lkbidr_spin; - - struct dlm_rsbtable *ls_rsbtbl; - uint32_t ls_rsbtbl_size; - - struct dlm_dirtable *ls_dirtbl; - uint32_t ls_dirtbl_size; - - struct mutex ls_waiters_mutex; - struct list_head ls_waiters; /* lkbs needing a reply */ - - struct mutex ls_orphans_mutex; - struct list_head ls_orphans; - - struct mutex ls_timeout_mutex; - struct list_head ls_timeout; - - spinlock_t ls_new_rsb_spin; - int ls_new_rsb_count; - struct list_head ls_new_rsb; /* new rsb structs */ - - struct list_head ls_nodes; /* current nodes in ls */ - struct list_head ls_nodes_gone; /* dead node list, recovery */ - int ls_num_nodes; /* number of nodes in ls */ - int ls_low_nodeid; - int ls_total_weight; - int *ls_node_array; - - int ls_slot; - int ls_num_slots; - int ls_slots_size; - struct dlm_slot *ls_slots; - - struct dlm_rsb ls_stub_rsb; /* for returning errors */ - struct dlm_lkb ls_stub_lkb; /* for returning errors */ - struct dlm_message ls_stub_ms; /* for faking a reply */ - - struct dentry *ls_debug_rsb_dentry; /* debugfs */ - struct dentry *ls_debug_waiters_dentry; /* debugfs */ - struct dentry *ls_debug_locks_dentry; /* debugfs */ - struct dentry *ls_debug_all_dentry; /* debugfs */ - - wait_queue_head_t ls_uevent_wait; /* user part of join/leave */ - int ls_uevent_result; - struct completion ls_members_done; - int ls_members_result; - - struct miscdevice ls_device; - - struct workqueue_struct *ls_callback_wq; - - /* recovery related */ - - struct mutex ls_cb_mutex; - struct list_head ls_cb_delay; /* save for queue_work later */ - struct timer_list ls_timer; - struct task_struct *ls_recoverd_task; - struct mutex ls_recoverd_active; - spinlock_t ls_recover_lock; - unsigned long ls_recover_begin; /* jiffies timestamp */ - uint32_t ls_recover_status; /* DLM_RS_ */ - uint64_t ls_recover_seq; - struct dlm_recover *ls_recover_args; - struct rw_semaphore ls_in_recovery; /* block local requests */ - struct rw_semaphore ls_recv_active; /* block dlm_recv */ - struct list_head ls_requestqueue;/* queue remote requests */ - struct mutex ls_requestqueue_mutex; - struct dlm_rcom *ls_recover_buf; - int ls_recover_nodeid; /* for debugging */ - uint64_t ls_rcom_seq; - spinlock_t ls_rcom_spin; - struct list_head ls_recover_list; - spinlock_t ls_recover_list_lock; - int ls_recover_list_count; - wait_queue_head_t ls_wait_general; - struct mutex ls_clear_proc_locks; - - struct list_head ls_root_list; /* root resources */ - struct rw_semaphore ls_root_sem; /* protect root_list */ - - const struct dlm_lockspace_ops *ls_ops; - void *ls_ops_arg; - - int ls_namelen; - char ls_name[1]; -}; - -#define LSFL_WORK 0 -#define LSFL_RUNNING 1 -#define LSFL_RECOVERY_STOP 2 -#define LSFL_RCOM_READY 3 -#define LSFL_RCOM_WAIT 4 -#define LSFL_UEVENT_WAIT 5 -#define LSFL_TIMEWARN 6 -#define LSFL_CB_DELAY 7 - -/* much of this is just saving user space pointers associated with the - lock that we pass back to the user lib with an ast */ - -struct dlm_user_args { - struct dlm_user_proc *proc; /* each process that opens the lockspace - device has private data - (dlm_user_proc) on the struct file, - the process's locks point back to it*/ - struct dlm_lksb lksb; - struct dlm_lksb __user *user_lksb; - void __user *castparam; - void __user *castaddr; - void __user *bastparam; - void __user *bastaddr; - uint64_t xid; -}; - -#define DLM_PROC_FLAGS_CLOSING 1 -#define DLM_PROC_FLAGS_COMPAT 2 - -/* locks list is kept so we can remove all a process's locks when it - exits (or orphan those that are persistent) */ - -struct dlm_user_proc { - dlm_lockspace_t *lockspace; - unsigned long flags; /* DLM_PROC_FLAGS */ - struct list_head asts; - spinlock_t asts_spin; - struct list_head locks; - spinlock_t locks_spin; - struct list_head unlocking; - wait_queue_head_t wait; -}; - -static inline int dlm_locking_stopped(struct dlm_ls *ls) -{ - return !test_bit(LSFL_RUNNING, &ls->ls_flags); -} - -static inline int dlm_recovery_stopped(struct dlm_ls *ls) -{ - return test_bit(LSFL_RECOVERY_STOP, &ls->ls_flags); -} - -static inline int dlm_no_directory(struct dlm_ls *ls) -{ - return (ls->ls_exflags & DLM_LSFL_NODIR) ? 1 : 0; -} - -int dlm_netlink_init(void); -void dlm_netlink_exit(void); -void dlm_timeout_warn(struct dlm_lkb *lkb); -int dlm_plock_init(void); -void dlm_plock_exit(void); - -#ifdef CONFIG_DLM_DEBUG -int dlm_register_debugfs(void); -void dlm_unregister_debugfs(void); -int dlm_create_debug_file(struct dlm_ls *ls); -void dlm_delete_debug_file(struct dlm_ls *ls); -#else -static inline int dlm_register_debugfs(void) { return 0; } -static inline void dlm_unregister_debugfs(void) { } -static inline int dlm_create_debug_file(struct dlm_ls *ls) { return 0; } -static inline void dlm_delete_debug_file(struct dlm_ls *ls) { } -#endif - -#endif /* __DLM_INTERNAL_DOT_H__ */ - |